Abstract
This article proposes a correction technique for impedance matching between short dipole or monopole antennae and transceivers, based on the baseband pre-equalization of the input signal by a wave-digital filter, whose topology and coefficients are adjustable. A fixed L-section matching network is combined with a second L-section that is digitally implemented and, through parameters sensing, can compensate for antenna impedance variations in real-time. In this way, the paper provides a flexible and digitally stable solution, instead of using tunable or switchable physical components, which might be subject to hardware limitations such as cost, size and linearity. The proposed technique is assessed through a simulation that shows its effectiveness.
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